const fp = require('lodash/fp');
const cars = [
    {
        name: 'Ferrari FF',
        horsepower: 660,
        dollar_value: 70000,
        in_stock: true
    },
    {
        name: 'Spyker C12 Zagato',
        horsepower: 650,
        dollar_value: 648000,
        in_stock: false
    },
    {
        name: 'Jaguar XKR-S',
        horsepower: 550,
        dollar_value: 13200,
        in_stock: false
    },
    {
        name: 'Audi R8',
        horsepower: 525,
        dollar_value: 114200,
        in_stock: false
    },
    {
        name: 'Aston Martin One-77',
        horsepower: 750,
        dollar_value: 1850000,
        in_stock: true
    },
    {
        name: 'Pagani Huayra',
        horsepower: 700,
        dollar_value: 1300000,
        in_stock: false
    },
];

const isLastInStock = function (cars) {
   const last_car = fp.last(cars);
   return fp.prop('in_stock', last_car);
};

const isLastInStock2 = function (cars) {
    const fn = fp.flowRight(fp.flowRight(fp.prop('in_stock')), fp.last);
    return fn(cars);
};
console.log('isLastInStock', isLastInStock(cars));
console.log('isLastInStock2', isLastInStock2(cars));